1
|
Mathiarasu RR, Panneerselvam K, Kumar PS, Rangasamy G, Subashchandrabose R, George M. Reline deep eutectic solvent mediated synthesis of lanthanum titanate for heavy metal remediation and photocatalytic degradation. Chemosphere 2022; 308:136529. [PMID: 36207798 DOI: 10.1016/j.chemosphere.2022.136529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/08/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
Toxic heavy metal and dye contamination are potential threats that mutilate the essential triad of life; air, water and soil. Despite commercial applicability and importance, the over accumulation of these noxious toxicants has become a disturbing concern. As a result, their remediation has drawn greater fascination leading to the inexplicable quest for a material which can act as both an adsorbent and as a photocatalyst. The present work highlights a novel solid-state technique assisted with reline (Choline chloride: Urea) deep eutectic solvent for the synthesis of lanthanum titanate. The synthesized material was established with physical characterizations like PXRD, FT-IR, UV-DRS, BET, XPS, HR-SEM and TEM techniques. Further, the ruptured petal-like lanthanum titanate was integrated as an adsorbent for the removal of lead (Pb), arsenic (As) and chromium (Cr) heavy metals. The adsorbent presented increased adsorption efficiencies of 96, 74 and 71% towards Pb, As and Cr respectively. Dependence of the degradation efficiency over concentration, pH, contact time and competitive environments were analyzed and inferred. Furthermore, lanthanum titanate was used for the photocatalytic degradation of reactive black (RB5), red (RR198) and yellow (RY145) dyes. The degradation efficiencies were found to be 68.31, 85.2 and 96.8% for RB5, RR198 and RY145 dyes respectively. Variation in concentration and pH of the dye solutions were examined and reaction kinetics was also proposed. In conclusion, the as synthesized lanthanum titanate is assured to play dual roles as a versatile cost-effective adsorbent for the remediation of heavy metals and as a potential candidate for photocatalytic degradation.
Collapse
Affiliation(s)
- Roselin Ranjitha Mathiarasu
- Department of Chemistry, Stella Maris College (Autonomous) affiliated to University of Madras, Chennai, 600 086, Tamil Nadu, India
| | | | - P Senthil Kumar
- Department of Chemical Engineering, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, Tamil Nadu, India; Centre of Excellence in Water Research (CEWAR), Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, Tamil Nadu, India
| | - Gayathri Rangasamy
- Department of Sustainable Engineering, Institute of Biotechnology, Saveetha School of Engineering, SIMATS, Chennai, 602 105, Tamil Nadu, India.
| | - Raghu Subashchandrabose
- Center for Advanced Research & Development (CARD)/Chemistry, Vels Institute of Science, Technology & Advanced Studies (VISTAS), Chennai, 600 117, Tamil Nadu, India
| | - Mary George
- Department of Chemistry, Stella Maris College (Autonomous) affiliated to University of Madras, Chennai, 600 086, Tamil Nadu, India.
| |
Collapse
|
2
|
Venkatesan R, Raja SSS, Vijayakumar R, Panneerselvam K. Isolation and Identification of Staphylococci and Pseudomonas from Diabetic Foot Ulcer in Perambalur District Hospitals in Tamil Nadu. JPRI 2021. [DOI: 10.9734/jpri/2021/v33i1331261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Diabetic foot ulcers are still a problem for the health care system and are majorly influencing quality of life. Infected foot ulcer is one of the most feared complications of diabetes mellitus, leading to gangrene and it needs to be amputed. Diabetic foot lesions are major medical, social and economic problem and leading cause of hospitalization for patients with diabetes worldwide. The risk of a diabetic patient for developing a foot ulcer was estimated to be ~25%. Samples were collected from 65 infected patients of diabetic foot ulcer male and female. The mean age group was found to be 40-80 years with the clinical history such as age, sex, types of diabetes duration of diabetes, size of ulcer and duration of ulcer were observed and recorded. The Specific mediums were used for the isolation and identification using classical methods based on their morphology, Grams stain reaction, oxidase and catalase tests were performed to confirm the isolates were both gram-negative and gram-positive organisms Bergey’s manual of Determinative Bacteriology. Further, MALDI- TOF (Matrix-Assisted Laser Desorption/Ionization) was used to confirm the isolates identified in classical methods were Staphylococci (79%) and Pseudomonas (21%) In this study Among 68 isolates, identified in out of 41 isolates Pseudomonasaeruginosa (21%) Staphylococcus aureus (54%) Staphylococcus hominis (20%)and Staphylococcous hemolytic(5%). Although in gram positive organism Staphylococcus aureus (54%) was the most predominant isolate found in diabetic foot ulcer.
Collapse
|
3
|
Perfetto L, Pastrello C, Del-Toro N, Duesbury M, Iannuccelli M, Kotlyar M, Licata L, Meldal B, Panneerselvam K, Panni S, Rahimzadeh N, Ricard-Blum S, Salwinski L, Shrivastava A, Cesareni G, Pellegrini M, Orchard S, Jurisica I, Hermjakob HH, Porras P. The IMEx Coronavirus interactome: an evolving map of Coronaviridae-Host molecular interactions. bioRxiv 2020:2020.06.16.153817. [PMID: 32587962 PMCID: PMC7310617 DOI: 10.1101/2020.06.16.153817] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The current Coronavirus Disease 2019 (COVID-19) pandemic, caused by the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), has spurred a wave of research of nearly unprecedented scale. Among the different strategies that are being used to understand the disease and develop effective treatments, the study of physical molecular interactions enables studying fine-grained resolution of the mechanisms behind the virus biology and the human organism response. Here we present a curated dataset of physical molecular interactions, manually extracted by IMEx Consortium curators focused on proteins from SARS-CoV-2, SARS-CoV-1 and other members of the Coronaviridae family. Currently, the dataset comprises over 2,200 binarized interactions extracted from 86 publications. The dataset can be accessed in the standard formats recommended by the Proteomics Standards Initiative (HUPO-PSI) at the IntAct database website ( www.ebi.ac.uk/intact ), and will be continuously updated as research on COVID-19 progresses.
Collapse
Affiliation(s)
- L Perfetto
- European Bioinformatics Institute (EMBL-EBI), European Molecular Biology Laboratory, Wellcome Genome Campus, Hinxton, CB10 1SD, UK
| | - C Pastrello
- Krembil Research Institute, Data Science Discovery Centre for Chronic Diseases, University Health Network, 5KD-407, 60 Leonard Avenue, Toronto, ON, M5T 0S8, Canada
| | - N Del-Toro
- European Bioinformatics Institute (EMBL-EBI), European Molecular Biology Laboratory, Wellcome Genome Campus, Hinxton, CB10 1SD, UK
| | - M Duesbury
- European Bioinformatics Institute (EMBL-EBI), European Molecular Biology Laboratory, Wellcome Genome Campus, Hinxton, CB10 1SD, UK
- UCLA-DOE Institute, UCLA, Los Angeles, USA
| | - M Iannuccelli
- Department of Biology, University of Rome Tor Vergata, Via della Ricerca Scientifica, Rome, Italy
| | - M Kotlyar
- Krembil Research Institute, Data Science Discovery Centre for Chronic Diseases, University Health Network, 5KD-407, 60 Leonard Avenue, Toronto, ON, M5T 0S8, Canada
| | - L Licata
- Department of Biology, University of Rome Tor Vergata, Via della Ricerca Scientifica, Rome, Italy
| | - B Meldal
- European Bioinformatics Institute (EMBL-EBI), European Molecular Biology Laboratory, Wellcome Genome Campus, Hinxton, CB10 1SD, UK
| | - K Panneerselvam
- European Bioinformatics Institute (EMBL-EBI), European Molecular Biology Laboratory, Wellcome Genome Campus, Hinxton, CB10 1SD, UK
| | - S Panni
- Department of Biology, Ecology and Earth Sciences, Università della Calabria, Rende, Italy
| | - N Rahimzadeh
- UCLA-DOE Institute, UCLA, Los Angeles, USA
- Providence John Wayne Cancer Institute, Santa Monica, USA
| | - S Ricard-Blum
- Univ Lyon, University Claude Bernard Lyon 1, INSA Lyon, CPE, Institute of Molecular and Supramolecular Chemistry and Biochemistry (ICBMS), UMR 5246, F-69622 Villeurbanne, France
| | | | - A Shrivastava
- European Bioinformatics Institute (EMBL-EBI), European Molecular Biology Laboratory, Wellcome Genome Campus, Hinxton, CB10 1SD, UK
| | - G Cesareni
- Department of Biology, University of Rome Tor Vergata, Via della Ricerca Scientifica, Rome, Italy
| | - M Pellegrini
- Department of Molecular, Cell and Developmental Biology, UCLA, Los Angeles, USA
| | - S Orchard
- European Bioinformatics Institute (EMBL-EBI), European Molecular Biology Laboratory, Wellcome Genome Campus, Hinxton, CB10 1SD, UK
| | - I Jurisica
- Krembil Research Institute, Data Science Discovery Centre for Chronic Diseases, University Health Network, 5KD-407, 60 Leonard Avenue, Toronto, ON, M5T 0S8, Canada
- Departments of Medical Biophysics and Computer Science, University of Toronto, Toronto, ON, Canada
| | - H H Hermjakob
- European Bioinformatics Institute (EMBL-EBI), European Molecular Biology Laboratory, Wellcome Genome Campus, Hinxton, CB10 1SD, UK
| | - P Porras
- European Bioinformatics Institute (EMBL-EBI), European Molecular Biology Laboratory, Wellcome Genome Campus, Hinxton, CB10 1SD, UK
| |
Collapse
|
4
|
Maurides S, Blankinship D, Panneerselvam K, Jackson G, Ghio S, Tedford R, Houston B. Pulmonary Artery Wedge Pressure Respiratory Variation Predicts Hemodynamic Response to Systemic Vasodilators. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
|
5
|
Perfetto L, Pastrello C, del-Toro N, Duesbury M, Iannuccelli M, Kotlyar M, Licata L, Meldal B, Panneerselvam K, Panni S, Rahimzadeh N, Ricard-Blum S, Salwinski L, Shrivastava A, Cesareni G, Pellegrini M, Orchard S, Jurisica I, Hermjakob H, Porras P. The IMEx coronavirus interactome: an evolving map of Coronaviridae-host molecular interactions. Database (Oxford) 2020; 2020:baaa096. [PMID: 33206959 PMCID: PMC7673336 DOI: 10.1093/database/baaa096] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 10/19/2020] [Accepted: 10/23/2020] [Indexed: 12/14/2022]
Abstract
The current coronavirus disease of 2019 (COVID-19) pandemic, caused by the severe acute respiratory syndrome coronavirus (SARS-CoV)-2, has spurred a wave of research of nearly unprecedented scale. Among the different strategies that are being used to understand the disease and develop effective treatments, the study of physical molecular interactions can provide fine-grained resolution of the mechanisms behind the virus biology and the human organism response. We present a curated dataset of physical molecular interactions focused on proteins from SARS-CoV-2, SARS-CoV-1 and other members of the Coronaviridae family that has been manually extracted by International Molecular Exchange (IMEx) Consortium curators. Currently, the dataset comprises over 4400 binarized interactions extracted from 151 publications. The dataset can be accessed in the standard formats recommended by the Proteomics Standards Initiative (HUPO-PSI) at the IntAct database website (https://www.ebi.ac.uk/intact) and will be continuously updated as research on COVID-19 progresses.
Collapse
Affiliation(s)
- L Perfetto
- European Molecular Biology Laboratory, Wellcome Genome Campus, European Bioinformatics Institute (EMBL-EBI), Hinxton, CB10 1SD, UK
| | - C Pastrello
- Krembil Research Institute, Data Science Discovery Centre for Chronic Diseases, University Health Network, 5KD-407, 60 Leonard Avenue, Toronto, ON, M5T 0S8, Canada
| | - N del-Toro
- European Molecular Biology Laboratory, Wellcome Genome Campus, European Bioinformatics Institute (EMBL-EBI), Hinxton, CB10 1SD, UK
| | - M Duesbury
- European Molecular Biology Laboratory, Wellcome Genome Campus, European Bioinformatics Institute (EMBL-EBI), Hinxton, CB10 1SD, UK
- UCLA-DOE Institute, UCLA, Los Angeles, CA 90095, USA
| | - M Iannuccelli
- Department of Biology, University of Rome Tor Vergata, Via della Ricerca Scientifica, Rome, 00133, Italy
| | - M Kotlyar
- Krembil Research Institute, Data Science Discovery Centre for Chronic Diseases, University Health Network, 5KD-407, 60 Leonard Avenue, Toronto, ON, M5T 0S8, Canada
| | - L Licata
- Department of Biology, University of Rome Tor Vergata, Via della Ricerca Scientifica, Rome, 00133, Italy
| | - B Meldal
- European Molecular Biology Laboratory, Wellcome Genome Campus, European Bioinformatics Institute (EMBL-EBI), Hinxton, CB10 1SD, UK
| | - K Panneerselvam
- European Molecular Biology Laboratory, Wellcome Genome Campus, European Bioinformatics Institute (EMBL-EBI), Hinxton, CB10 1SD, UK
| | - S Panni
- Department of Biology, Ecology and Earth Sciences, Università della Calabria, Rende, 87036, Italy
| | - N Rahimzadeh
- UCLA-DOE Institute, UCLA, Los Angeles, CA 90095, USA
- Providence John Wayne Cancer Institute, Department of Translational Molecular, Santa Monica, CA 90404, USA
| | - S Ricard-Blum
- Univ Lyon, University Claude Bernard Lyon 1, INSA Lyon, CPE, Institute of Molecular and Supramolecular Chemistry and Biochemistry (ICBMS), UMR 5246, F-69622 Villeurbanne, 69622, France
| | - L Salwinski
- UCLA-DOE Institute, UCLA, Los Angeles, CA 90095, USA
| | - A Shrivastava
- European Molecular Biology Laboratory, Wellcome Genome Campus, European Bioinformatics Institute (EMBL-EBI), Hinxton, CB10 1SD, UK
| | - G Cesareni
- Department of Biology, University of Rome Tor Vergata, Via della Ricerca Scientifica, Rome, 00133, Italy
| | - M Pellegrini
- Department of Molecular, Cell and Developmental Biology, UCLA, Los Angeles, CA 90095, USA
| | - S Orchard
- European Molecular Biology Laboratory, Wellcome Genome Campus, European Bioinformatics Institute (EMBL-EBI), Hinxton, CB10 1SD, UK
| | - I Jurisica
- Krembil Research Institute, Data Science Discovery Centre for Chronic Diseases, University Health Network, 5KD-407, 60 Leonard Avenue, Toronto, ON, M5T 0S8, Canada
- Departments of Medical Biophysics and Computer Science, University of Toronto, Toronto, ON, M5T 0S8, Canada
| | - H Hermjakob
- European Molecular Biology Laboratory, Wellcome Genome Campus, European Bioinformatics Institute (EMBL-EBI), Hinxton, CB10 1SD, UK
| | - P Porras
- European Molecular Biology Laboratory, Wellcome Genome Campus, European Bioinformatics Institute (EMBL-EBI), Hinxton, CB10 1SD, UK
| |
Collapse
|
6
|
Sathiya P, Panneerselvam K, Abdul Jaleel M. Optimization of laser welding process parameters for super austenitic stainless steel using artificial neural networks and genetic algorithm. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.matdes.2011.11.028] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
7
|
Sabitha V, Panneerselvam K, Ramachandran S. In vitro α–glucosidase and α–amylase enzyme inhibitory effects in aqueous extracts of Abelmoscus esculentus (L.) Moench. Asian Pac J Trop Biomed 2012. [DOI: 10.1016/s2221-1691(12)60150-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
8
|
Sabitha V, Ramachandran S, Naveen KR, Panneerselvam K. Antidiabetic and antihyperlipidemic potential of Abelmoschus esculentus (L.) Moench. in streptozotocin-induced diabetic rats. J Pharm Bioallied Sci 2011; 3:397-402. [PMID: 21966160 PMCID: PMC3178946 DOI: 10.4103/0975-7406.84447] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2011] [Revised: 04/23/2011] [Accepted: 05/20/2011] [Indexed: 12/05/2022] Open
Abstract
Objectives: The present investigation was aimed to study the antidiabetic and antihyperlipidemic potential of Abelmoschus esculentus peel and seed powder (AEPP and AESP) in streptozotocin (STZ)-induced diabetic rats. Materials and Methods: Acute toxicity of AEPP and AESP was studied in rats at 2000 mg/kg dose and diabetes was induced in rats by administration of STZ (60 mg/kg, i.p.). After 14 days of blood glucose stabilization, diabetic rats received AEPP, AESP, and glibenclamide up to 28 days. The blood samples were collected on day 28 to estimate the hemoglobin (Hb), glycosylated hemoglobin (HbA1c), serum glutamate-pyruvate transferase (SGPT), total protein (TP), and lipid profile levels. Results: In acute toxicity study, AESP and AESP did not show any toxicity or death up to a dose of 2000 mg/kg. Therefore, to assess the antidiabetic action, one by fifth and one by tenth dose of both powders were selected. Administration of AEPP and AESP at 100 and 200 mg/kg dose in diabetic rats showed significant (P < 0.001) reduction in blood glucose level and increase in body weight than diabetic control rats. A significant (P < 0.001) increased level of Hb, TP, and decreased level of HbA1c, SGPT were observed after the treatment of both doses of AEPP and AESP. Also, elevated lipid profile levels returned to near normal in diabetic rats after the administration of AEPP and AESP, 100 and 200 mg/kg dose, compared to diabetic control rats. Conclusion: The present study results, first time, support the antidiabetic and antihyperlipidemic potential of A. esculentus peel and seed powder in diabetic rats.
Collapse
Affiliation(s)
- V Sabitha
- Department of Bioinformatics, Karunya University, Coimbatore, Tamil Nadu, India
| | | | | | | |
Collapse
|
9
|
Vijayakumar R, Panneerselvam K, Muthukumar C, Thajuddin N, Panneerselvam A, Saravanamuthu R. Optimization of Antimicrobial Production by a Marine Actinomycete Streptomyces afghaniensis VPTS3-1 Isolated from Palk Strait, East Coast of India. Indian J Microbiol 2011; 52:230-9. [PMID: 23729887 DOI: 10.1007/s12088-011-0138-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2009] [Accepted: 04/30/2010] [Indexed: 11/29/2022] Open
Abstract
Totally 25 marine soil samples were collected from the region of Palk Strait of Bay of Bengal, Tamil Nadu, and were subjected to the isolation of actinomycetes. Sixty-eight morphologically distinct isolates were obtained and 37% (25) of them had antimicrobial activity. The potential producer was named as Streptomyces sp. VPTS3-1 and the phylogenetic evaluation on the basis of 16S rDNA sequence further categorized the organism as Streptomyces afghaniensis VPTS3-1. Further, the antimicrobial compound was extracted from the isolate using various solvents and the antimicrobial efficacies were tested against bacterial and fungal pathogens. In addition, in vitro optimization of parameters for the antimicrobial compound production revealed that the suitable pH as 7-8, the period of incubation as 9 days, temperature (30°C), salinity (2%), and starch and KNO3 as the suitable carbon and nitrogen sources respectively in starch-casein medium.
Collapse
Affiliation(s)
- R Vijayakumar
- Department of Microbiology, Bharathidasan University College (W), Orathanadu, 614 625 India
| | | | | | | | | | | |
Collapse
|
10
|
Singh S, Kumar A, Panneerselvam K, Vennila JJ. Diagnosis of arthritis through fuzzy inference system. J Med Syst 2010; 36:1459-68. [PMID: 20927572 DOI: 10.1007/s10916-010-9606-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2010] [Accepted: 09/27/2010] [Indexed: 11/29/2022]
Abstract
Expert or knowledge-based systems are the most common type of AIM (artificial intelligence in medicine) system in routine clinical use. They contain medical knowledge, usually about a very specifically defined task, and are able to reason with data from individual patients to come up with reasoned conclusion. Although there are many variations, the knowledge within an expert system is typically represented in the form of a set of rules. Arthritis is a chronic disease and about three fourth of the patients are suffering from osteoarthritis and rheumatoid arthritis which are undiagnosed and the delay of detection may cause the severity of the disease at higher risk. Thus, earlier detection of arthritis and treatment of its type of arthritis and related locomotry abnormalities is of vital importance. Thus the work was aimed to design a system for the diagnosis of Arthitis using fuzzy logic controller (FLC) which is, a successful application of Zadeh's fuzzy set theory. It is a potential tool for dealing with uncertainty and imprecision. Thus, the knowledge of a doctor can be modelled using an FLC. The performance of an FLC depends on its knowledge base which consists of a data base and a rule base. It is observed that the performance of an FLC mainly depends on its rule base, and optimizing the membership function distributions stored in the data base is a fine tuning process.
Collapse
Affiliation(s)
- Sachidanand Singh
- Department of Bioinformatics, Karunya University, Coimbatore, Tamil Nadu, India
| | | | | | | |
Collapse
|
11
|
Byabartta P, Pal S, Misra T, Sinha C, Liao FL, Panneerselvam K, LU TH. Synthesis, Spectroscopic and Electrochemical Studies of Isomeric Dichloro-bis-[ N (1)-Alkyl-2-(Arylazo)Imidazole]-Osmium(II). Single Crystal X-ray Structures of Blue-Violet Dichloro-Bis-[ N (1)-Methyl-2-(Arylazo)Imidazole]-Osmium(II) Species. J COORD CHEM 2010. [DOI: 10.1080/00958970290020793] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- P. Byabartta
- a Department of Chemistry , The University of Burdwan , Burdwan , 713 104 , India
| | - S. Pal
- a Department of Chemistry , The University of Burdwan , Burdwan , 713 104 , India
| | - T.K. Misra
- a Department of Chemistry , The University of Burdwan , Burdwan , 713 104 , India
| | - C. Sinha
- a Department of Chemistry , The University of Burdwan , Burdwan , 713 104 , India
| | - F.-L. Liao
- b Department of Chemistry , National Tsing Hua University , Hsinchu , Taiwan
| | - K. Panneerselvam
- c Department of Physics , National Tsing Hua University , Hsinchu , Taiwan
| | - T.-H. LU
- c Department of Physics , National Tsing Hua University , Hsinchu , Taiwan
| |
Collapse
|
12
|
Affiliation(s)
- A. Reyes
- a Departamento de Química Orgánica , Escuela Nacional de Ciencias Biológicas, IPN , Prolongación de Carpio y Plan de Ayala S/N. Col. Santo Tomás, 11340, México, D.F
| | - J. NÁjera
- a Departamento de Química Orgánica , Escuela Nacional de Ciencias Biológicas, IPN , Prolongación de Carpio y Plan de Ayala S/N. Col. Santo Tomás, 11340, México, D.F
| | - R. Mendoza
- a Departamento de Química Orgánica , Escuela Nacional de Ciencias Biológicas, IPN , Prolongación de Carpio y Plan de Ayala S/N. Col. Santo Tomás, 11340, México, D.F
| | - E. Molins I Grau
- b Institut de Ciència de Materials de Barcelona , Campus de la UAB, 08193, Bellaterra, España
| | - E. Espinosa
- b Institut de Ciència de Materials de Barcelona , Campus de la UAB, 08193, Bellaterra, España
| | - H. Salgado
- a Departamento de Química Orgánica , Escuela Nacional de Ciencias Biológicas, IPN , Prolongación de Carpio y Plan de Ayala S/N. Col. Santo Tomás, 11340, México, D.F
| | - J. Tamariz
- a Departamento de Química Orgánica , Escuela Nacional de Ciencias Biológicas, IPN , Prolongación de Carpio y Plan de Ayala S/N. Col. Santo Tomás, 11340, México, D.F
| | - M. Soriano
- c Instituto de Química, Universidad Nacional Autónoma de México , Circuito Exterior, Ciudad Universitaria Coyoacán, 04510, México, D. F
| | - K. Panneerselvam
- c Instituto de Química, Universidad Nacional Autónoma de México , Circuito Exterior, Ciudad Universitaria Coyoacán, 04510, México, D. F
| |
Collapse
|
13
|
Rajaduraipandi K, Mani KR, Panneerselvam K, Mani M, Bhaskar M, Manikandan P. Prevalence and antimicrobial susceptibility pattern of methicillin resistant Staphylococcus aureus: a multicentre study. Indian J Med Microbiol 2006; 24:34-8. [PMID: 16505553 DOI: 10.4103/0255-0857.19892] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
PURPOSE Methicillin resistant Staphylococcus aureus (MRSA) is an important nosocomial pathogen. We report the prevalence and antibiotic susceptibility pattern of MRSA in major southern districts of Tamilnadu. METHODS A total of 7172 clinical specimens and 1725 carrier screening samples were collected from different centers and subjected to MRSA screening using conventional microbiological methods. Subsequently the antibiotic sensitivity test was performed for the confirmed MRSA isolates. RESULTS Out of 906 strains of S. aureus isolated from clinical and carrier samples, 250 (31.1%) and 39 (37.9%) were found to be methicillin resistant respectively. Almost all clinical MRSA strains (99.6%) were resistant to penicillin, 93.6% to ampicillin, and 63.2% towards gentamicin, co-trimoxazole, cephalexin, erythromycin, and cephotaxime. All MRSA strains (100%) of carrier screening samples had resistance to penicillin and about 71.8% and 35.9% were resistant to ampicillin and co-trimoxazole respectively. Multidrug resistance was observed among 63.6% of clinical and 23% of carrier MRSA isolates. However, all strains of clinical and carrier subjects were sensitive to vancomycin. CONCLUSION The determination of prevalence and antibiotic sensitivity pattern of MRSA will help the treating clinicians for first line treatment in referral hospitals.
Collapse
Affiliation(s)
- K Rajaduraipandi
- Department of Microbiology, Dr. GR Damodaran College of science, Coimbatore- 641 014, Tamilnadu, India.
| | | | | | | | | | | |
Collapse
|
14
|
Rajaduraipandi K, Mani KR, Panneerselvam K, Mani M, Bhaskar M, Manikandan P. PREVALENCE AND ANTIMICROBIAL SUSCEPTIBILITY PATTERN OF METHICILLIN RESISTANT STAPHYLOCOCCUS AUREUS: A MULTICENTRE STUDY. Indian J Med Microbiol 2006. [DOI: 10.1016/s0255-0857(21)02468-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
15
|
Manikandan P, Bhaskar M, Revathy R, John RK, Narendran V, Panneerselvam K. Acanthamoeba keratitis - a six year epidemiological review from a tertiary care eye hospital in south India. Indian J Med Microbiol 2004; 22:226-30. [PMID: 17642743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
PURPOSE This study analyses the prevalence, demography, predisposing factors and seasonal variation of Acanthamoeba keratitis. METHODS A retrospective review of all cases presenting with keratitis at the cornea clinic, Aravind Eye Hospital, Coimbatore, from August 1997 to July 2003, was done for screening patients with a provisional diagnosis of Acanthamoeba keratitis. Their records were further analyzed for microbiological details. Cases with culture proven Acanthamoeba keratitis were included for epidemiological analysis. RESULTS From a total of 4519 patients who attended cornea clinic 32 (33 eyes) patients were confirmed to be positive for Acanthamoeba keratitis. Twenty cases (62.5%) were males. Majority (18; 54.2%) of the Acanthamoeba keratitis eyes reported corneal trauma by solid objects. No peak period was observed in a year, as the number of cases was almost uniform in all months. CONCLUSION This study indicates the increasing prevalence of Acanthamoeba keratitis among non-contact lens users in this region during the 6-year period.
Collapse
Affiliation(s)
- P Manikandan
- Department of Microbiology, Aravind Eye Care System, Aravind Eye Hospital and Post Graduate Institute of Ophthalmology, Avinashi Road, Coimbatore- 641 014, India
| | | | | | | | | | | |
Collapse
|
16
|
Manikandan P, Bhaskar M, Revathy R, John RK, Narendran V, Panneerselvam K. ACANTHAMOEBA KERATITIS – A SIX YEAR EPIDEMIOLOGICAL REVIEW FROM A TERTIARY CARE EYE HOSPITAL IN SOUTH INDIA. Indian J Med Microbiol 2004. [DOI: 10.1016/s0255-0857(21)02767-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
17
|
Lu TH, Panneerselvam K, Chen LH, Lin YJ, Liao FL, Chung CS. Crystal structure of (2,2'-bipyridine-N,N')(1,4,7,10-tetraazacyclododecane-N,N',N",N''')nickel(II) diperchlorate. ANAL SCI 2001; 17:571-2. [PMID: 11990583 DOI: 10.2116/analsci.17.571] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- T H Lu
- Department of Physics, National Tsing Hua University, Hsinchu, Taiwan ROC.
| | | | | | | | | | | |
Collapse
|
18
|
Srikrishna G, Panneerselvam K, Westphal V, Abraham V, Varki A, Freeze HH. Two proteins modulating transendothelial migration of leukocytes recognize novel carboxylated glycans on endothelial cells. J Immunol 2001; 166:4678-88. [PMID: 11254728 DOI: 10.4049/jimmunol.166.7.4678] [Citation(s) in RCA: 116] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
We recently showed that a class of novel carboxylated N:-glycans was constitutively expressed on endothelial cells. Activated, but not resting, neutrophils expressed binding sites for the novel glycans. We also showed that a mAb against these novel glycans (mAbGB3.1) inhibited leukocyte extravasation in a murine model of peritoneal inflammation. To identify molecules that mediated these interactions, we isolated binding proteins from bovine lung by their differential affinity for carboxylated or neutralized glycans. Two leukocyte calcium-binding proteins that bound in a carboxylate-dependent manner were identified as S100A8 and annexin I. An intact N terminus of annexin I and heteromeric assembly of S100A8 with S100A9 (another member of the S100 family) appeared necessary for this interaction. A mAb to S100A9 blocked neutrophil binding to immobilized carboxylated glycans. Purified human S100A8/A9 complex and recombinant human annexin I showed carboxylate-dependent binding to immobilized bovine lung carboxylated glycans and recognized a subset of mannose-labeled endothelial glycoproteins immunoprecipitated by mAbGB3.1. Saturable binding of S100A8/A9 complex to endothelial cells was also blocked by mAbGB3.1. These results suggest that the carboxylated glycans play important roles in leukocyte trafficking by interacting with proteins known to modulate extravasation.
Collapse
MESH Headings
- Amino Acid Sequence
- Animals
- Annexin A1/chemistry
- Annexin A1/immunology
- Annexin A1/metabolism
- Antibodies, Monoclonal/metabolism
- Antibodies, Monoclonal/pharmacology
- Antigens, Differentiation/immunology
- Antigens, Differentiation/isolation & purification
- Antigens, Differentiation/metabolism
- Antigens, Differentiation/physiology
- Binding Sites, Antibody
- Binding, Competitive/immunology
- Calcium-Binding Proteins/immunology
- Calcium-Binding Proteins/isolation & purification
- Calcium-Binding Proteins/metabolism
- Calcium-Binding Proteins/physiology
- Calgranulin A
- Calgranulin B
- Carboxylic Acids/metabolism
- Carrier Proteins/isolation & purification
- Carrier Proteins/metabolism
- Carrier Proteins/physiology
- Cattle
- Cell Adhesion/immunology
- Cell Membrane/immunology
- Cell Membrane/metabolism
- Cell Movement/immunology
- Chromatography, Affinity/methods
- Endothelium, Vascular/cytology
- Endothelium, Vascular/immunology
- Endothelium, Vascular/metabolism
- Glycopeptides/chemical synthesis
- Glycopeptides/metabolism
- Humans
- Immune Sera/metabolism
- Immune Sera/pharmacology
- Leukocytes/immunology
- Leukocytes/metabolism
- Lung/cytology
- Lung/immunology
- Lung/metabolism
- Mice
- Molecular Sequence Data
- Molecular Weight
- Neutrophils/immunology
- Neutrophils/metabolism
- Polysaccharides/metabolism
- Rabbits
- S100 Proteins/immunology
- S100 Proteins/isolation & purification
- S100 Proteins/metabolism
- S100 Proteins/physiology
- Sequence Homology, Amino Acid
Collapse
|
19
|
Srikrishna G, Toomre DK, Manzi A, Panneerselvam K, Freeze HH, Varki A, Varki NM. A novel anionic modification of N-glycans on mammalian endothelial cells is recognized by activated neutrophils and modulates acute inflammatory responses. J Immunol 2001; 166:624-32. [PMID: 11123346 DOI: 10.4049/jimmunol.166.1.624] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We previously reported an unusual carboxylated modification on N:-glycans isolated from whole bovine lung. We have now raised IgG mAbs against the modification by immunization with biotinylated aminopyridine-derivatized glycans enriched for the anionic species and screening for Abs whose reactivities were abrogated by carboxylate neutralization of bovine lung glycopeptides. One such Ab (mAb GB3.1) was inhibited by carboxylated bovine lung glycopeptides and other multicarboxylated molecules, but not by glycopeptides in which the carboxylate groups were modified. The Ab recognized an epitope constitutively expressed on bovine, human, and other mammalian endothelial cells. Stimulated, but not resting, neutrophils bound to immobilized bovine lung glycopeptides in a carboxylate-dependent manner. The binding of activated neutrophils to immobilized bovine lung glycopeptides was inhibited both by mAb GB3.1 and by soluble glycopeptides in a carboxylate-dependent manner. The Ab also inhibited extravasation of neutrophils and monocytes in a murine model of peritoneal inflammation. This inhibition of cell trafficking correlated with the increased sequestration but reduced transmigration of leukocytes that were found to be adherent to the endothelium of the mesenteric microvasculature. Taken together, these results indicate that these novel carboxylated N:-glycans are constitutively expressed on vascular endothelium and participate in acute inflammatory responses by interaction with activated neutrophils.
Collapse
MESH Headings
- Acute Disease
- Adjuvants, Immunologic/metabolism
- Adjuvants, Immunologic/physiology
- Amidohydrolases/immunology
- Amidohydrolases/metabolism
- Aminopyridines/chemical synthesis
- Aminopyridines/immunology
- Animals
- Anions
- Antibodies, Monoclonal/administration & dosage
- Antibodies, Monoclonal/chemistry
- Antibodies, Monoclonal/metabolism
- Antibody Specificity
- Antigen-Antibody Reactions
- Binding Sites, Antibody
- Biotin/analogs & derivatives
- Biotin/chemical synthesis
- Biotin/immunology
- Biotin/physiology
- Carboxylic Acids/metabolism
- Cattle
- Cell Movement/immunology
- Cells, Cultured
- Disease Models, Animal
- Endothelium, Vascular/enzymology
- Endothelium, Vascular/immunology
- Endothelium, Vascular/metabolism
- Endothelium, Vascular/pathology
- Epitopes/immunology
- Epitopes/metabolism
- Female
- Humans
- Injections, Intravenous
- Mice
- Mice, Inbred BALB C
- Monocytes/pathology
- Neutrophil Activation/immunology
- Neutrophils/immunology
- Neutrophils/metabolism
- Neutrophils/pathology
- Oligosaccharides/immunology
- Oligosaccharides/metabolism
- Oligosaccharides/physiology
- Organ Specificity/immunology
- Peptide-N4-(N-acetyl-beta-glucosaminyl) Asparagine Amidase
- Peritonitis/immunology
- Peritonitis/metabolism
- Peritonitis/pathology
- Peritonitis/prevention & control
Collapse
Affiliation(s)
- G Srikrishna
- Glycobiology Research and Training Center, Department of Medicine, University of California, La Jolla, CA 92037, USA
| | | | | | | | | | | | | |
Collapse
|
20
|
Rush JS, Panneerselvam K, Waechter CJ, Freeze HH. Mannose supplementation corrects GDP-mannose deficiency in cultured fibroblasts from some patients with Congenital Disorders of Glycosylation (CDG). Glycobiology 2000; 10:829-35. [PMID: 10929009 DOI: 10.1093/glycob/10.8.829] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Congenital Disorders of Glycosylation (CDG) are human deficiencies in glycoprotein biosynthesis. Previous studies showed that 1 mM mannose corrects defective protein N-glycosylation in cultured fibroblasts from some CDG patients. We hypothesized that these CDG cells have limited GDP-mannose (GDP-Man) and that exogenous mannose increases the GDP-Man levels. Using a well established method to measure GDP-Man, we found that normal fibroblasts had an average of 23.5 pmol GDP-Man/10(6) cells, whereas phosphomannomutase (PMM)-deficient fibroblasts had only 2.3-2.7 pmol/10(6) cells. Adding 1 mM mannose to the culture medium increased the GDP-Man level in PMM-deficient cells to approximately 15.5 pmol/10(6) cells, but had no significant effect on GDP-Man levels in normal fibroblasts. Similarly, mannose supplementation increased GDP-Man from 4.6 pmol/10(6) cells to 24.6 pmol/10(6) cells in phosphomannose isomerase (PMI)-deficient fibroblasts. Based on the specific activity of the GDP-[(3)H]Man pool present in [2-(3)H]mannose labeled cells, mannose supplementation also partially corrected the impaired synthesis of mannosylphosphoryldolichol (Man-P-Dol) and Glc(0)(-)(3)Man(9)GlcNAc(2)-P-P-Dol. These results confirm directly that deficiencies in PMM and PMI result in lowered cellular GDP-Man levels that are corrected by the addition of mannose. In contrast to these results, GDP-Man levels in fibroblasts from a CDG-Ie patient, who is deficient in Man-P-Dol synthase, were normal and unaffected by mannose supplementation even though mannose addition was found to correct abnormal lipid intermediate synthesis in another study (Kim et al. [2000] J. Clin. Invest., 105, 191-198). The mechanism by which mannose supplementation corrects abnormal protein N-glycosylation in Man-P-Dol synthase deficient cells is unknown, but this observation suggests that the regulation of Man-P-Dol synthesis and utilization may be more complex than is currently understood.
Collapse
Affiliation(s)
- J S Rush
- Department of Biochemistry, A.B.Chandler Medical Center, University of Kentucky College of Medicine, Lexington, KY, USA
| | | | | | | |
Collapse
|
21
|
Panneerselvam K, Lin SC, Liu CL, Liaw YC, Lin JY, Lu TH. Crystallization of agglutinin from the seeds of Abrus precatorius. Acta Crystallogr D Biol Crystallogr 2000; 56:898-9. [PMID: 10930837 DOI: 10.1107/s0907444900005047] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/1999] [Accepted: 03/21/2000] [Indexed: 11/10/2022]
Abstract
Agglutinin protein purified from the seeds of Abrus precatorius has a high antitumour activity and was crystallized at room temperature with polyethylene glycol 8000 as the precipitant. The agglutinin crystal diffracted to 3.45 A and belongs to one of two possible tetragonal space groups, P4(1)2(1)2 or P4(3)2(1)2, with unit-cell parameters a = b = 141.91, c = 105.63 A. The asymmetric unit contains a heterotetrameric protein molecule of molecular weight 134 kDa and has a solvent content of approximately 38%.
Collapse
Affiliation(s)
- K Panneerselvam
- Department of Physics, National Tsing Hua University, Hsinchu 30055, Taiwan
| | | | | | | | | | | |
Collapse
|
22
|
Freeze HH, Lammertz M, Iranfar N, Fuller D, Panneerselvam K, Loomis WF. Consequences of disrupting the gene that encodes alpha-glucosidase II in the N-linked oligosaccharide biosynthesis pathway of Dictyostelium discoideum. Dev Genet 2000; 21:177-86. [PMID: 9397534 DOI: 10.1002/(sici)1520-6408(1997)21:3<177::aid-dvg1>3.0.co;2-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
We have identified and disrupted the gene coding for alpha-glucosidase II in Dictyostelium discoideum. This enzyme is responsible for removing two alpha 1,3-linked glucose residues from N-linked oligosaccharides on newly synthesized glycoproteins. Mutagenesis by restriction enzyme-mediated integration (REMI) generated a clone, DG1033, which grows well but forms abnormal fruiting bodies with short, thick stalks. The strain lacks alpha-glucosidase II activity and makes incompletely processed N-linked oligosaccharides that are abnormally large and have fewer sulfate and phosphate esters. The morphological, enzymatic, and oligosaccharide profile phenotypes of the disruption mutant are all recapitulated by a targeted disruption of the normal gene. Furthermore, all of these defects are corrected in cells transformed with a normal, full-length copy of the gene. The phenotypic characteristics of DG1033 as well as chromosomal mapping of the disrupted gene indicate that it is the site of the previously characterized modA mutation. The Dictyostelium gene is highly homologous to alpha-glucosidase II genes in the human and the pig, C. elegans, and yeast. Although various cell lines have been reported to be defective in alpha-glucosidase II activity, disruption of the Dictyostelium gene gives the first example of a clear developmental phenotype associated with loss of this enzyme.
Collapse
Affiliation(s)
- H H Freeze
- Burnham Institute, La Jolla, CA 92037, USA
| | | | | | | | | | | |
Collapse
|
23
|
Abstract
To investigate a potential candidate material for making artificial red blood cells to supplement blood transfusion, the X-ray structure of porcine haemoglobin at 1.8 A resolution was determined as part of research towards synthesizing human blood. Porcine haemoglobin was crystallized by the vapor-diffusion method, producing crystals of dimensions 0.3-0.5 mm after successive seeding. The crystals belong to the orthorhombic space group P2(1)2(1)2(1), with unit-cell parameters a = 68.10, b = 72.27, c = 114.85 A. The initial phase was determined by the molecular-replacement method, using human oxyhaemoglobin as a model. The final R factor was 21.1% for 36 820 reflections after validation of 574 water molecules. The r.m.s. deviations of bond lengths, angles, torsion angles and improper angles from their ideal values are 0.017 A, 3.0, 20.6 and 1.8 degrees, respectively. The average B factor is 33.63 A(2) for the haemoglobin molecule and 50.53 A(2) for the water molecules. The structure could be superimposed on a 2.8 A resolution structure with an r.m.s. difference of 0.59 A in main-chain atomic positions and 1. 27 A in side-chain atomic positions. Porcine and human haemoglobins are compared. A tentative model for artificial blood is proposed based on the complementarity relationship of the surface charges between haemoglobin and the surrounding cell membrane.
Collapse
Affiliation(s)
- T H Lu
- Department of Physics, National Tsing-Hua University, Hsinchu 30043, Taiwan.
| | | | | | | | | |
Collapse
|
24
|
Kumaran D, Ponnuswamy M, Jayanthi G, Ramakrishnan V, Panneerselvam K, Soriano-Garcia M. Crystal Structure of 4-(2-chlorophenyl)-3-(4-methoxyphenyl)-1,2,4-triazole-5-thione. Cryst Res Technol 2000. [DOI: 10.1002/(sici)1521-4079(200002)35:2<239::aid-crat239>3.0.co;2-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
25
|
Panneerselvam K, Lu TH, Chi TY, Tung SF, Chung CS. [(5 RS,9 SR)-4,8-Diazaundecane-1,11-diamine](perchlorato- O, O')copper(II) perchlorate. Acta Crystallogr C 1999. [DOI: 10.1107/s0108270199098339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
26
|
Panneerselvam K, Lu TH, Tung SF, Chattopadhyay P, Lo JM, Chung CS. Bis[2-(1,3-benzothiazol-2-yl)phenolato-O,N]chlorooxorhenium(V)–dichloromethane (1/1.5). Acta Crystallogr C 1999. [DOI: 10.1107/s0108270199010008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
|
27
|
|
28
|
Panneerselvam K, Lu TH, Chi TY, Liao FL, Chung CS. cis-(Nitrato-O,O')[(1RS,4SR,5SR,8RS,11SR,12SR)-C-rac-1,5,8,12-tetramethyl-1,4,8,11-tetraazacyclotetradecane-κ4N]nickel(II) nitrate. Acta Crystallogr C 1999. [DOI: 10.1107/s0108270198014449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
29
|
Panneerselvam K, Lu TH, Tung SF, Narayan S, Jain VK. Chloro(diethyl dithiophosphato-S,S')(triphenylphosphine-P)palladium(II). Acta Crystallogr C 1999. [DOI: 10.1107/s0108270198014905] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
30
|
Panneerselvam K, Lu TH, Chi TY, Liao FL, Chung CS. trans-Diaqua(C-meso-1,5,8,12-tetramethyl-1,4,8,11-tetraazacyclotetradecane-κ4N)nickel(II) dichloride. Acta Crystallogr C 1999. [DOI: 10.1107/s0108270198017594] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
31
|
Narayan S, K. Jain V, Panneerselvam K, Huey Lu T, Tung SF. Synthesis and characterization of monomeric palladium(II) pyridine-2-chalcogenolate complexes. Polyhedron 1999. [DOI: 10.1016/s0277-5387(98)00426-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
32
|
Lu TH, Panneerselvam K, Huang CS, Chung CS, Tung SF. Two Conformational (Configurational) Isomers of Diperchlorato[(5 RS,6 RS,12 SR,13 SR)-5,6,12,13-tetramethyl-1,4,8,11-tetraazacyclotetradecane-κ 4N]copper(II). Acta Crystallogr C 1998. [DOI: 10.1107/s0108270198003710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
|
33
|
Panneerselvam K, Lu TH, Chi TY, Pariya C, Liao FL, Chung CS. Chloro(1,4,8,12-tetraazacyclopentadecane-κ 4N)zinc(II) Perchlorate. Acta Crystallogr C 1998. [DOI: 10.1107/s0108270197019999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
34
|
Panneerselvam K, Lu TH, Tung SF, Liu GS, Chi TY, Chung CS. trans-Dichloro[(1RS,4RS,5SR,7RS,8SR,11SR,12RS,14SR)-5,7,12,14-tetramethyl-1,4,8,11-tetraazacyclotetradecane-κ4N]cobalt(III) Perchlorate. Acta Crystallogr C 1998. [DOI: 10.1107/s0108270197019690] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
35
|
|
36
|
Alton G, Hasilik M, Niehues R, Panneerselvam K, Etchison JR, Fana F, Freeze HH. Direct utilization of mannose for mammalian glycoprotein biosynthesis. Glycobiology 1998; 8:285-95. [PMID: 9451038 DOI: 10.1093/glycob/8.3.285] [Citation(s) in RCA: 90] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Direct utilization of mannose for glycoprotein biosynthesis has not been studied because cellular mannose is assumed to be derived entirely from glucose. However, animal sera contain sufficient mannose to force uptake through glucose-tolerant, mannose-specific transporters. Under physiological conditions this transport system provides 75% of the mannose for protein glycosylation in human hepatoma cells despite a 50- to 100-fold higher concentration of glucose. This suggests that direct use of mannose is more important than conversion from glucose. Consistent with this finding the liver is low in phosphomannose isomerase activity (fructose-6-P<->mannose-6-P), the key enzyme for supplying glucose-derived mannose to the N-glycosylation pathway. [2-3H] Mannose is rapidly absorbed from the intestine of anesthetized rats and cleared from the blood with a t1/2of 30 min. After a 30 min lag, label is incorporated into plasma glycoproteins, and into glycoproteins of all organs during the first hour. Most (87%) of the initial incorporation occurs in the liver, but this decreases as radiolabeled plasma glycoproteins increase. Radiolabel in glycoproteins also increases 2- to 6-fold in other organs between 1-8 h, especially in lung, skeletal muscle, and heart. These organs may take up hepatic-derived radiolabeled plasma glycoproteins. Significantly, the brain, which is not exposed to plasma glycoproteins, shows essentially no increase in radiolabel. These results suggest that mammals use mannose transporters to deliver mannose from blood to the liver and other organs for glycoprotein biosynthesis. Additionally, contrary to expectations, most of the mannose for glycoprotein biosynthesis in cultured hepatoma cells is derived from mannose, not glucose. Extracellular mannose may also make a significant contribution to glycoprotein biosynthesis in the intact organism.
Collapse
Affiliation(s)
- G Alton
- The Burnham Institute, La Jolla, CA 92037, USA
| | | | | | | | | | | | | |
Collapse
|
37
|
Panneerselvam K, Lu TH, Chi TY, Chung CS, Chen YJ, Kwan KS. (C-meso-5,5,7,12,12,14-Hexamethyl-1,4,8,11-tetraazacyclotetradecane-N1-acetato-N,N',N'',N''',O)copper(II) Bromide Monohydrate. Acta Crystallogr C 1998. [DOI: 10.1107/s010827019701113x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
38
|
Lu TH, Panneerselvam K, Tung SF, Chi TY, Chung CS. Chloro(1,4,7,11-tetraazacyclotetradecane- N, N', N'', N''')zinc(II) Perchlorate. Acta Crystallogr C 1997. [DOI: 10.1107/s010827019701192x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
39
|
Panneerselvam K, Lu TH, Huang CH, Tung SF, Shiu KB. Di-μ-acetato-bis[dicarbonyl(pyrazole)ruthenium(I)] and Di-μ-acetato-bis[dicarbonyl(3,5-dimethylpyrazole)ruthenium(I)]. Acta Crystallogr C 1997. [DOI: 10.1107/s0108270197012274] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
|
40
|
Panneerselvam K, Lu TH, Tung SF, Chi TY, Chung CS. (1,4,7,11,13-Pentaazacyclohexadecane-κ 5N)(perchlorato-κ O)nickel(II) Perchlorate. Acta Crystallogr C 1997. [DOI: 10.1107/s0108270197011141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
41
|
Panneerselvam K, Etchison JR, Freeze HH. Human fibroblasts prefer mannose over glucose as a source of mannose for N-glycosylation. Evidence for the functional importance of transported mannose. J Biol Chem 1997. [DOI: 10.1016/s0021-9258(18)39707-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
|
42
|
Panneerselvam K, Etchison JR, Freeze HH. Human fibroblasts prefer mannose over glucose as a source of mannose for N-glycosylation. Evidence for the functional importance of transported mannose. J Biol Chem 1997; 272:23123-9. [PMID: 9287314 DOI: 10.1074/jbc.272.37.23123] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Mannose in N-linked oligosaccharides is assumed to be derived primarily from glucose through phosphomannose isomerase (PMI). The discovery of mammalian mannose-specific transporters that function at physiological concentrations suggested that mannose might directly contribute to oligosaccharide synthesis. To determine the relative contribution of glucose and mannose, human fibroblasts were labeled with either [2-3H]mannose or [1,5,6-3H]glucose at the same specific activity, and the N-linked chains were released by PNGase F digestion. Most of the trichloroacetic acid-precipitable [3H]mannose label was released by this digestion, but only about 10% of the trichloroacetic acid-precipitable material was released from cells labeled with [1,5,6-3H]glucose. Both sugars labeled a similar array of oligosaccharides, and acid hydrolysis of these chains showed that [2-3H]mannose contributed 65-75% of the [3H]mannose in cells labeled for 1 h, despite the 100-fold higher concentration of exogenous glucose. Mannose consumption and [2-3H]mannose utilization were within the range of rates expected for mannose transport via the mannose-specific transporter. About 7-14% of the [2-3H]mannose is used for glycosylation, while the rest (86-93%) is catabolized to 3H2O via PMI. Increasing the exogenous mannose concentration beyond mannose transporter saturation results in the conversion of >99% of [2-3H]mannose into 3H2O. Long term labeling of cells with [2-3H]mannose showed that the specific activity of mannose in glycoproteins reached 77% of the specific activity of [2-3H]mannose added to the medium. These results show that when fibroblasts are provided with physiological concentrations of mannose, they use the mannose-specific transporter to supply the majority of mannose needed for glycoprotein synthesis. PMI may normally be used to catabolize excess mannose rather than to primarily supply Man-6-P for glycoprotein synthesis.
Collapse
|
43
|
Panneerselvam K, Etchison JR, Skovby F, Freeze HH. Abnormal metabolism of mannose in families with carbohydrate-deficient glycoprotein syndrome type 1. Biochem Mol Med 1997; 61:161-7. [PMID: 9259981 DOI: 10.1006/bmme.1997.2599] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Patients with carbohydrate-deficient glycoprotein syndrome (CDGS) Type 1 underglycosylate many glycoproteins by failing to add entire N-linked carbohydrate chains to them. The primary defect in these patients has been reported as a > 90% deficiency in phosphomannomutase activity (PMM), the enzyme that converts mannose-6-phosphate to mannose-1-phosphate. This lesion reduces both the amount and the size of the lipid-linked oligosaccharide precursor. We have now analyzed the activity of PMM and the level of glycosylation in cultured fibroblasts as well as the level of blood mannose in seven CDGS Type 1 patients and their parents. All of these patients were approximately 95% deficient in PMM activity and their parents had an average of 51% of control PMM activity. Furthermore, parental fibroblasts showed reduced glycosylation and a higher proportion of truncated N-linked chains compared to those made by control fibroblasts. Addition of 0.25 mM mannose to the culture medium corrected both the underglycosylation and size of the oligosaccharide chains in CDGS Type 1 patients and their parents. Finally, serum from CDGS patients had considerably reduced mannose levels (5-40 microM) compared to normal controls (40-80 microM) and some parents were below normal (16-103 microM). These results suggest that the reduced blood mannose level is a consequence of the PMM deficiency. This is the first inherited disorder in human metabolism that shows a decrease in available mannose. Increasing blood mannose levels might correct some protein underglycosylation in these patients.
Collapse
|
44
|
Chui D, Oh-Eda M, Liao YF, Panneerselvam K, Lal A, Marek KW, Freeze HH, Moremen KW, Fukuda MN, Marth JD. Alpha-mannosidase-II deficiency results in dyserythropoiesis and unveils an alternate pathway in oligosaccharide biosynthesis. Cell 1997; 90:157-67. [PMID: 9230311 DOI: 10.1016/s0092-8674(00)80322-0] [Citation(s) in RCA: 163] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Alpha-mannosidase-II (alphaM-II) catalyzes the first committed step in the biosynthesis of complex asparagine-linked (N-linked) oligosaccharides (N-glycans). Genetic deficiency of alphaM-II should abolish complex N-glycan production as reportedly does inhibition of alphaM-II by swainsonine. We find that mice lacking a functional alphaM-II gene develop a dyserythropoietic anemia concurrent with loss of erythrocyte complex N-glycans. Unexpectedly, nonerythroid cell types continued to produce complex N-glycans by an alternate pathway comprising a distinct alpha-mannosidase. These studies reveal cell-type-specific variations in N-linked oligosaccharide biosynthesis and an essential role for alphaM-II in the formation of erythroid complex N-glycans. alphaM-II deficiency elicits a phenotype in mice that correlates with human congenital dyserythropoietic anemia type II.
Collapse
Affiliation(s)
- D Chui
- Howard Hughes Medical Institute and Division of Cellular and Molecular Medicine, University of California San Diego, La Jolla 92093, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
45
|
Panneerselvam K, Rudiño-Piñera E, Soriano-García M. 3,4,5,6,9,10-Hexahydro-14,16-dihydroxy-3-methyl-1H-2-benzoxacyclotetradecin-1,7(8H)-dione (Zearalenone). Acta Crystallogr C 1996. [DOI: 10.1107/s0108270196011055] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
46
|
Panneerselvam K, Soriano-García M, Reyes-Arellano A, Tamariz-Mascarúa J, Mendoza-Sánchez RI. The 1:1 Molecular Complex of N,N'-Bis(4-methoxybenzylidene)ethylenediamine and Hydroquinone. Acta Crystallogr C 1996. [DOI: 10.1107/s0108270196011067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
47
|
Gunasekaran K, Velmurugan D, Murugan P, Ramakrishnan VT, Panneerselvam K, Soriano-García M. 3,4,6,7,9,10-Hexahydro-3,3,6,6-tetramethyl-1,8(2H,5H)-dioxo-10-phenyl-9-acridinylmethyl Acetate. Acta Crystallogr C 1996. [DOI: 10.1107/s010827019600652x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
48
|
|
49
|
Panneerselvam K, Rudiño-Piñera E, Soriano-García M. β-Zearalenol Sesquihydrate. Acta Crystallogr C 1996. [DOI: 10.1107/s0108270196006415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
50
|
Bolaños-García V, Juárez-Martínez G, Rudiño-Piñera E, Panneerselvam K, Soriano-García M. Structure of 17-β-estradiol benzoate and its interaction with TAF-2 domain of estrogen receptor (ER) by modeling. Acta Crystallogr A 1996. [DOI: 10.1107/s0108767396089155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|